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But the larva of the Coleoptera, Lepidoptera, etc., never have more than nine abdominal segments, it is therefore not probable that they represent the original young form of the oldest Insects, and that the Orthoptera, with an abdomen of eleven segments, should have been subsequently developed from them.
The stamina are six, with one stile, growing from the germen, which stands up in three brownish segments, resembling a cup. The trees grow from fifty to sixty feet high, with large, spreading, horizontal branches, almost as low as the earth. The root is said to contain much camphor that may be obtained by boiling or other processes unknown on Sumatra.
This fusion of segments in the thorax of the highest forms furnishes a very firm framework for the attachment of wings and muscles. These wings are a new development, and how they arose is still a question. But they give the insect the capability of exceedingly rapid locomotion.
There are various forms of this instrument. One form is that known as Prosser's expanding mandrel, in which there are six or eight segments, which are forced out by means of a hexagonal or octagonal wedge, which is forced forward by a screw.
For these segments, which are less dangerous, the Ammophila perhaps relies on the diffusion of her venom; in any case, the injections, though hastily administered, do not diverge from a close vicinity of the ganglia, for their field of action is very limited, as is proved by the number of inoculations necessary to induce complete torpor, or, more simply, by the following example.
The only newspaper which warmly approved it was the "Pennsylvania Gazette," which appeared with a union device, a snake divided into thirteen segments, with the motto "Unite or Die!" The editor of this paper was Benjamin Franklin, then eight-and-forty years of age and already one of the most famous men in America.
It is interesting to note that a form, peripatus, still exists which stands almost midway between annelids and insects and has only four segments in the head. The formation of the head was thus a gradual process, one segment being added after another. In the turbellaria the dominant functions were digestion and reproduction, and their organs composed almost the whole body.
The eight segments which coalesce to make the head of a centipede, jointly protect the cephalic ganglion, and afford a solid fulcrum for the jaws, &c. The many bones which unite to form a vertebral skull have like uses.
Then, like some dreadful ringed monster, it cast off two segments, north, south, and moved forward on its belly, while the two new segments, already turned to living bodies, with heads and eyes and contracted scales, struggled on alone, diverging to the north and south, creeping, squirming, undulating, penetrating villages and cities, stretching across hills and rivers, until all the land was shining with shed scales and the sky reeked with the smoke of flaming tongues.
Instead, he slept the dreamless sleep of the just if there was any particular reason for him to consider himself just. Gimp Hines put the finishing touches on the first full-scale ionic during that next week. The others of the Bunch, each working when he could, completed cementing the segments of the first bubb together.
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